Ep 5. The Trouble with Scribbles

Mac is a young boy who has an imaginary friend named Bloo. Bloo lives in an imaginary world called Foster's Home for Imaginary Friends, a place where imaginary friends who have been outgrown or abandoned by their creators can stay and play with each other. In season 1 episode 5, titled "The Trouble with Scribbles," Mac and Bloo meet a new imaginary friend named Scribbles.

Scribbles is a colorful and playful friend who loves to draw and create art. However, his drawings have a special power - they come to life and cause chaos wherever they go. When Scribbles arrives at Foster's, he begins to show off his artistic skills by drawing on everything in sight. At first, everyone is amazed by his talent, but soon they realize that his drawings are causing trouble.

Bloo and the other imaginary friends soon discover that they can't control Scribbles and his artwork. They try to teach him how to use his powers responsibly, but he doesn't listen. The situation becomes even more complicated when Scribbles starts to draw a giant monster that threatens to destroy Foster's Home.

Mac and Bloo must team up with the other imaginary friends to stop the monster and help Scribbles learn how to use his powers for good. Along the way, they learn important lessons about creativity and responsibility. In the end, Mac and Bloo must say goodbye to Scribbles, but they know that he will always be welcome back at Foster's Home for Imaginary Friends.

"The Trouble with Scribbles" is a fun and colorful episode that showcases the power of imagination and creativity. It is a great introduction to the series and a must-watch for fans of the show.